Mathematics
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    3x^4+4x^3+4x^2-1=0
    641.5=(652-70)÷x×(0.035+0.000000234×130321)
    641.5=(652-70)÷x×(0.35+0.000000234×130321)
    641.5=(652-70)÷x×(0.35+0.000000234×(652+70)÷2)
    (950-x)×(0.29+0.000256×(950+x)÷2)=0.23×641.5
    5cosx/(x^2-1)
    14X^2-182X+560
    256(1+x)^2=4000
    2x×√x
    24-x=3/5*(32-x)
    x*(1.7-0.007x)=91.714
    (3X+2)/4=8
    3X+2/4=8
    3x+2
    3x+3
    x^2
    6x+(-12x)
    1.5/x-1-e^(-x) = 0
    x/11-57+x/13-42+x/15-23+x/17=10
    3/x-1-e^(-x)=0

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